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        .row {
            border: 1px red dashed;
            margin: 10px 0;
            height: 100px;
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        .ca {
            border: 1px pink solid;
            background-color: lightgray;
            height: 30px;
        }

        .wh {
            width:100px;
            height:100px;
            background:#EFEFEF;
            float:left;
            margin:10px;
        }
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<div class="wh border-success border"> </div>
<div class="wh border-success border-top"> </div>
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<div class="wh border-success border-0"> </div>
<div class="wh border-success border border-top-0"> </div>
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<div class="wh border-success border  border-bottom-0"> </div>
<div class="wh border-success border  border-left-0"> </div>
<div style="clear:both;"></div>
<div class="wh border-success border rounded"> </div>
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<div style="width:200px" class="wh border-success border rounded-circle"> </div>
<div style="width:200px"  class="wh border-success border rounded-pill"> </div>
<div style="width:200px"  class="wh border-success border rounded-0"> </div>
<div class="wh border-success border rounded-sm"> </div>
<div class="wh border-success border rounded-lg"> </div>

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